Corin Limited

Corin Spinal Systems Limited

Ian James Emslie

Simon Collins

Johan Bellemans

David Mark Fletcher

Derek Redvers Cooper

Jan Maria Karel Victor

A femoral sizing jig for use in total arthroplasty of left and right knees, comprises a femoral body, an external-rotation-angle arm which is, preferably pivotable, relative to the femoral body for setting an external angular rotation of a left or right femur, at least one of a cutting-jig guide and a cutting jig which is, preferably slidable, relative to the femoral body and in unison with movement of the external rotation-angle arm, and a medial posterior-condylar locator which is movable in unison with the movement of the external-rotation-angle arm, so as to maintain a fixed or substantially fixed relative distance with a medial side of the at least one of a cutting-jig guide and a cutting jig. A posterior-referencing femur resecting system using said femoral sizing jig and a method of resecting a femur at a knee joint relative to the medial posterior condyle are also provided.

Femoral sizing jig, femur resecting system, and method

A bone tapping kit for cutting an internal thread into bone defining a bore. The kit comprises 1) a guide component with a threaded aperture which, when in position, is aligned with the bore, and 2) a tap having a first portion with a first diameter and an external thread designed to engage with the threaded aperture of the guide component, and a second portion having a second diameter which is smaller than the first diameter and a helical cutting edge designed so that it can be received into the bore and cut an internal thread therein. The guide component and tap are dimensioned so that when the tap is introduced into the guide component the first portion engages with the threaded aperture in the guide component before the helical cutting edge of the second portion engages with the bore. Thus, the thread configuration that is cut into the bore forms a continuation of the same helix defined by the internal thread of the aperture of the guide member.

Prosthetic cup

A pedicle attachment assembly includes a pedicle attachment device having a head. A polyaxial housing has a through bore comprising a base portion and two posts upstanding from the base portion, the posts defining therebetween a slot for receiving a rod. A saddle-shaped element is disposable in the slot and has a part cylindrical recess in an upper surface for engagement in use with the rod. The saddle-shaped element has a convex lower portion for engagement in a complimentary concave recess in an upper surface of the head of the attachment device. The lower surface of the head of the attachment device and the lower end of the through bore in the housing have complementary part spherical surfaces for engagement with one another. A cap assembly is provided for clamping the rod in the housing.

Growing community of inventors

Gloucestershire, United Kingdom

Ian James Emslie